How to Reduce Bore Size of Your Saw Blade

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About Us

• Woodford Tooling sources products such as Planer
  blades and Knives from all over the world as well
  as supporting a number of specialist UK companies
  for woodworking Machinery, Spindle Tooling and
  Tersa Knives.
• Woodford Woodworking Tooling Ltd are completely
  dedicated to your total satisfaction.

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How to Reduce Bore Size of Your Saw Blade

• An experienced woodworker somehow understands the
  language of their saws and knows the relation
  between a saw and perfectly fitted blade. A blade
  must be snugly fitted to the arbor of the saw
  machine for working properly. If it is loose
  around the arbor it may damage or shatter the
  blade.
• Circular saw is the most versatile tool that you
  would love to possess. It serves your purpose
  well if you working on home renovation projects.
  These are pretty simple to use also but may
  require a bit of practice to master. Knowing more
  about blades used in a circular saw will not only
  increase your knowledge but will also increase
  their lifetime.

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Circular Saw Blade

• Bore The purpose of bore is to attach
  the blade to the arbor of the circular saw. You
  can also select a blade with a bore having larger
  diameter than the bore shaft or arbor of your
  saw. For this purpose, the reducer
  rings or adapter rings are used.
• Arbor The arbor is also known as bore shaft /
  spindle / mandrel on which the blade is mounted
  on. It is simply a motor shaft specifically
  designed for mounting the circular saw blade. The
  blade rotates on its axis when the power is
  supplied to circular saw motor.
• Mitre saw bore sizes vary with different
  manufacturers and different size blade. The size
  of arbor hole differs according to size and style
  of the blade.

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Arbor Reducer Bushing

• While replacing circular saw blade, it is
  important to assure that the arbor hole is of the
  same size as that of arbor on your saw. In case,
  the arbor hole of the blade is larger than the
  arbor of the saw, you can fix these metallic saw
  blade spacers or reducing rings.
• The saw blade bush is inserted into the larger
  arbor of the blade to match the smaller saw
  arbor. The outside diameter of the bush must be
  matched to the bore of the blade and the bore
  (internal diameter) of the bush should match the
  arbor of the saw.
• These bushing washers are easily to install,
  cheap and thus saves your money in case you need
  to work with shafts of two different sizes.
  Putting these bore bushes on your blades allow
  two or more blades to share the same spindle of
  your saw.

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Fixing Reducing Rings on Your Saw Blade

• Disconnect the saw from the power supply to avoid
  accidental damage or electric shocks.
• Uninstall the old blade as directed by the
  instruction manual of your saw.
• From the manufacturers specification, determine
  the correct bore/arbor size of the machine.
• Select the correct reducing ring, and just try to
  fix it on the arbor hole of the blade to ensure
  that it fits correctly to the arbor of your saw.
• Keep the saw blade on a flat surface such that
  the teeth of the blade should not be in contact
  with the flat surface.
• Fix the matching reducing ring over the bore.
• Now, you can mount the blade to arbor of your saw
  and clamp it properly.

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